A potent upper level trough moved east into Central Texas over a cold airmass causing widespread precipitation. Rain mixed with sleet and eventually turned over to snow across the northern half of county warning area.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EWX wrote it up.
A potent upper level trough moved east into Central Texas over a cold airmass causing widespread precipitation. Rain mixed with sleet and eventually turned over to snow across the northern half of county warning area. The area hardest hit by snow was generally north of Highway 71 in the northern Hill Country. Storm total snowfall amounts near 4 inches were reported in northern Burnet and Williamson County.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Feb 23, 6:14 AM CST, 1 hour 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 614 AM CST TUE FEB 23 2010 .UPDATE... HAVE INCLUDED LIGHT SLEET IN THE WINTERY MIX FOR NORTHERN AREAS THIS MORNING SHIFTING SOUTHWARD THROUGHOUT THE DAY. LITTLE TO NO SLEET ACCUMULATIONS ARE EXPECTED AS SURFACE TEMPERATURES ARE WARM AND MELTING SHOULD OCCUR UPON IMPACT. && .PREV DISCUSSION... /ISSUED 458 AM CST TUE FEB 23 2010/ UPDATE... HAVE INCLUDED BANDERA...KENDALL...AND HAYS COUNTIES TO THE WINTER STORM ADVISORY. GENERALLY NOT EXPECTING TOTALS ACROSS SAN MARCOS...BUT GRASSY AND OPEN AREAS ACROSS THE NORTHERN PORTION OF HAYS COUNTY COULD HAVE ACCUMULATIONS OF ONE TO TWO INCHES. PREV DISCUSSION... /ISSUED 452 AM CST TUE FEB 23 2010/ AVIATION... MVFR TO IFR CONDITIONS ACROSS S CENTRAL TX TODAY INTO THIS EVENING AS WINTER STORM SYSTEM RESULTS IN WIDESPREAD -RA AND -SN WITH EMBEDDED ISOLATED T. CONDITIONS WILL IMPROVE TO VFR FROM THE WEST BETWEEN 03Z AND 06Z AND CONTINUE THRU WEDNESDAY MORNING. NLY WINDS OF 10 TO 20 KNOTS WILL PREVAIL WITH GUSTS TO 25 KNOTS. PREV DISCUSSION... /ISSUED 429 AM CST TUE FEB 23 2010/ DISCUSSION... THE UPPER LEVEL LOW AND TROUGH AXIS ARE CURRENTLY PUSHING ACROSS CENTRAL TEXAS AND WILL DIVE INTO SOUTH CENTRAL TEXAS TODAY. THE TROUGH AXIS IS EXPECTED TO BE EAST OF OUR CWA BY EARLY WEDNESDAY. ISENTROPIC UPGLIDE WILL KEEP SKIES OVERCAST ACROSS SOUTH CENTRAL TEXAS TODAY AND HAS ALREADY BEGUN TO GENERATE STRATIFORM RAIN ACROSS THE WESTERN HILL COUNTRY AND ADJACENT AREAS THIS MORNING. GENERALLY EXPECTING THIS AREA OF RAIN TO EXPAND THIS MORNING AHEAD OF THE PASSAGE OF THE TROUGH. TEMPERATURES ARE GENERALLY WITHIN A FEW DEGREES OF TODAY'S HIGHS AND ARE EXPECTED TO FALL THROUGHOUT THE DAY. TEMPERATURES ALOFT ARE COLD ENOUGH FOR THE COLD RAIN TO CHANGE OVER TO SNOW ACROSS THE NORTHERN HALF OF SOUTH CENTRAL TEXAS LATER THIS MORNING AND THROUGH THE AFTERNOON. CURRENTLY ANTICIPATING THAT THE BULK OF THE PRECIP SOUTH OF HIGHWAY 90 WILL BE LIQUID...BUT COULD SEE A FEW AREAS WITH BRIEF FLURRIES MIXED IN THROUGH TONIGHT. AS FAR AS SNOW ACCUMULATIONS GO...NOT MUCH HAS CHANGED WITH THE LATEST MODEL RUNS. ANTICIPATING THE HIGHEST TOTALS TO REACH 3 TO 4 INCHES ACROSS GILLESPIE...LLANO...BURNET...AND WILLIAMSON COUNTIES AND THUS WILL LEAVE THE CURRENT WINTER STORM WARNING AS IS. 1 TO 3 INCH TOTALS ARE POSSIBLE ALONG AND NORTH OF A LINE FROM LANGTRY TO AUSTIN TO GIDDINGS. SURFACE TEMPERATURES WILL REMAIN ABOVE FREEZING THIS AFTERNOON. THUS...ANY SNOW ACCUMULATIONS ARE EXPECTED TO BE ACROSS GRASSY AREAS AND THAT WHICH DOES FALL ON ROADS WILL BECOME SLUSHY AND SLIPPERY AS IT MELTS. CANNOT RULE OUT THE CHANCES FOR PATCHY ICE WEDNESDAY MORNING ON ELEVATED ROADS AND BRIDGES AS TEMPERATURES DIP BELOW FREEZING OVERNIGHT. BENIGN WEATHER IS ANTICIPATED FOR THE REST OF THE WORK WEEK AS THE UPPER LEVEL TROUGH SLIDES TO THE EAST ON WEDNESDAY. AFTER A COLD START TO THE MORNING ON WEDNESDAY...TEMPERATURES WILL REACH THE UPPER 40S ACROSS THE NORTHEASTERN COUNTIES TO NEAR 60 ACROSS THE RIO GRANDE PLAINS. SURFACE RIDGING WILL KEEP SKIES CLEAR WEDNESDAY NIGHT WITH ANOTHER FREEZE EXPECTED FOR MUCH OF THE CWA. A PROGRESSIVE PATTERN IS EXPECTED FOR THE LATTER HALF OF THE FORECAST PERIOD. CHANCES FOR RAIN RE-ENTER THE FORECAST ON FRIDAY AS A SHORT-WAVE TROUGH PUSHES ACROSS SOUTH CENTRAL TEXAS. CURRENTLY EXPECTING ISOLATED TO SCATTERED SHOWERS LIMITED TO THE EASTERN HALF OF THE REGION. ANOTHER SYSTEM WILL ROLL THROUGH LATE IN THE WEEKEND/EARLY NEXT WEEK. BETTER AREAL COVERAGE OF RAIN IS EXPECTED WITH THIS SECOND SYSTEM. TEMPERATURES WILL BE MILD AND BELOW NORMAL THROUGH AT LEAST THE FIRST FEW DAYS OF MARCH. && .PRELIMINARY POINT TEMPS/POPS... AUSTIN CAMP MABRY 36 31 53 30 64 / 100 30 0 0 0 AUSTIN BERGSTROM INTL AIRPORT 37 29 50 28 63 / 100 30 0 0 0 NEW BRAUNFELS MUNI AIRPORT 38 29 54 30 65 / 100 30 0 0 0 BURNET MUNI AIRPORT 35 28 47 31 60 / 100 20 0 0 0 DEL RIO INTL AIRPORT 44 32 59 36 71 / 80 - 0 0 0 GEORGETOWN MUNI AIRPORT 35 30 48 32 61 / 100 30 0 0 0 HONDO MUNI AIRPORT 43 28 58 29 66 / 100 20 0 0 0 SAN MARCOS MUNI AIRPORT 38 28 53 30 65 / 100 30 0 0 0 LA GRANGE - FAYETTE REGIONAL 39 32 53 32 64 / 100 40 0 0 0 SAN ANTONIO INTL AIRPORT 42 32 56 31 66 / 100 20 0 0 0 STINSON MUNI AIRPORT 43 31 57 31 68 / 100 20 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY UNTIL MIDNIGHT CST TONIGHT FOR THE FOLLOWING COUNTIES: BANDERA...BASTROP...BLANCO...EDWARDS...HAYS... KENDALL...KERR...LEE...REAL...TRAVIS...VAL VERDE. WINTER STORM WARNING UNTIL MIDNIGHT CST TONIGHT FOR THE FOLLOWING COUNTIES: BURNET...GILLESPIE...LLANO...WILLIAMSON. && 25/01
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 439 AM CST TUE FEB 23 2010 TXZ171>173-183>194-202>209-217>225-228-241045- LLANO-BURNET-WILLIAMSON-VAL VERDE-EDWARDS-REAL-KERR-BANDERA- GILLESPIE-KENDALL-BLANCO-HAYS-TRAVIS-BASTROP-LEE-KINNEY-UVALDE- MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE-MAVERICK-ZAVALA- FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT-LAVACA-DIMMIT- 439 AM CST TUE FEB 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT... A WINTER STORM WILL AFFECT PORTIONS OF SOUTH CENTRAL TEXAS TODAY INTO THIS EVENING. A WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO MIDNIGHT TONIGHT FOR THE FOLLOWING COUNTIES: BURNET...GILLESPIE... LLANO... WILLIAMSON. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 6 AM THIS MORNING TO MIDNIGHT TONIGHT FOR THE FOLLOWING COUNTIES: BASTROP...BANDERA... BLANCO...EDWARDS...KENDAL..KERR...HAYS...LEE...REAL...TRAVIS...VAL VERDE. SNOW ACCUMULATIONS OF 2 TO 4 INCHES ARE EXPECTED ACROSS THE WARNING AREA TODAY. SNOWFALL AMOUNTS OF 1/2 TO 2 INCHES ARE POSSIBLE ACROSS THE ADVISORY AREA...WITH LESSER AMOUNTS ELSEWHERE. THE SNOW AND RAIN WILL END FROM THE WEST THIS EVENING. .DAYS TWO...WEDNESDAY... THERE COULD BE PATCHES OF ICE ON ROADS WEDNESDAY MORNING AS ANY WET SPOTS OR PUDDLES FREEZE...ESPECIALLY ON BRIDGES AND OVERPASSES. .DAYS THREE THROUGH SEVEN...THURSDAY THROUGH MONDAY... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 540 AM CST TUE FEB 23 2010 TXZ202>209-217>225-228-231900- KINNEY-UVALDE-MEDINA-BEXAR-COMAL-GUADALUPE-CALDWELL-FAYETTE- MAVERICK-ZAVALA-FRIO-ATASCOSA-WILSON-KARNES-GONZALES-DE WITT- LAVACA-DIMMIT- INCLUDING THE CITIES OF...BRACKETTVILLE...UVALDE...HONDO... SAN ANTONIO...NEW BRAUNFELS...SEGUIN...LOCKHART...LA GRANGE... EAGLE PASS...CRYSTAL CITY...PEARSALL...PLEASANTON...FLORESVILLE... KARNES CITY...GONZALES...CUERO...HALLETTSVILLE...CARRIZO SPRINGS 540 AM CST TUE FEB 23 2010 ...WINTERY WEATHER TODAY THROUGH TONIGHT... AN UPPER LEVEL LOW PRESSURE SYSTEM WILL SLIDE INTO SOUTH CENTRAL TEXAS TODAY. THIS SYSTEM WILL BRING COLDER TEMPERATURES AND A CHANCE OF WINTERY PRECIPITATION AS AN OVERRUNNING PATTERN PERSISTS. THE INITIAL PRECIPITATION TYPE THIS MORNING WILL BE RAIN WITH A MIX OF RAIN AND SNOW POSSIBLE IN THE NORTHERN HILL COUNTRY AND EDWARDS PLATEAU. THE RAIN AND SNOW MIX WILL DRIFT SOUTHWARD THROUGHOUT THE DAY ON TUESDAY REACHING NEAR HIGHWAY 90 BY LATE TUESDAY AFTERNOON. THE BULK OF THE PRECIPITATION SOUTH OF HIGHWAY 90 WILL BE LIQUID...BUT COULD SEE A FEW AREAS WITH BRIEF FLURRIES MIXED IN THROUGH TONIGHT. ACCUMULATIONS OF UP TO AN INCH ARE POSSIBLE ALONG A LINE FROM LANGTRY TO KENDALIA TO GIDDINGS. ACCUMULATIONS WILL DECREASE SOUTHWARD...RANGING FROM A QUARTER TO HALF OF AN INCH AS FAR SOUTH AS A COMSTOCK TO NEW BRAUNFELS TO LA GRANGE LINE. TRACE TO ONE QUARTER INCH AMOUNTS CAN BE EXPECTED AS FAR SOUTH AS A SPOFFORD TO LAVERNIA TO MOULTON LINE. NO SNOW ACCUMULATIONS ARE EXPECTED FURTHER SOUTH. PRECIPITATION WILL END ACROSS THE REGION BY DAWN WEDNESDAY AS THE UPPER LOW SHIFTS EAST.
The national radar mosaic for the moment the first event began.
1 winter storm. Local standard time, as filed.
CoCoRaHS observer reported 4.2 inches of snow near Jarrell.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2010Every state in 2010This day in weather historyWarnings in Texas, February 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 216560.